package com.dtx.zhuge.service;


import com.dtx.zhuge.spring.anno.Component;
import com.dtx.zhuge.spring.inter.BeanPostProcessor;

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;

@Component
public class DtxBeanPostProcessor implements BeanPostProcessor {
    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) {
        if (beanName.equals("userService")) {
            System.out.println("初始化前");
            ((UserServiceImpl)bean).setName("周瑜好帅");
        }
        return bean;
    }

    @Override
    public Object postProcessAfterInitialization(Object bean, String beanName) {
        System.out.println("初始化后");
        if (beanName.equals("userService")) {

            Object proxyInstance = Proxy.newProxyInstance(DtxBeanPostProcessor.class.getClassLoader(),
                    bean.getClass().getInterfaces(), new InvocationHandler() {
                        @Override
                        public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
                            System.out.println("代理逻辑");
                            return method.invoke(bean,args);
                        }
                    });

            return proxyInstance;

        }
        return bean;
    }
}
